3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['first','second','third']; // touch refcount $b = &$a; foreach($a as $v) { echo 'Running ', $v, "\n\n"; unset($a[1]); var_dump($a); var_dump($b); } echo 'final:', "\n"; var_dump($a);

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